#181444
Closest named color: Dark Indigo (#1F0954). oklch(23.1% 0.087 280.9), rgb(24, 20, 68).
Aa
White text reads best on this color (17.17:1).
About this color
#181444 is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.087 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.037 away. White text reads best on it, at 17.17:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.22:1 |
| White text | 17.17:1 |
Values
| HEX | #181444 |
| RGB | rgb(24, 20, 68) |
| HSL | hsl(245, 55%, 17%) |
| OKLCH | oklch(23.1% 0.087 280.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #181444 | 17.17:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #181444 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #181444 text on white | 17.17:1 | AAA | Lc 103.8 | Preferred for body text |
| #181444 text on black | 1.22:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E6E8FE
oklch(93.6% 0.03 281.7)
-
Step 200
200
#D2D6FF
oklch(88.6% 0.057 280.8)
-
Step 300
300
#B5BAFF
oklch(81% 0.097 280.8)
-
Step 400
400
#9092FF
oklch(70.6% 0.157 280.8)
-
Step 500
500
#7872FF
oklch(63.1% 0.203 280.8)
-
Step 600
600
#6453F3
oklch(55.7% 0.229 280.8)
-
Step 700
700
#5441D3
oklch(49.1% 0.213 281)
-
Step 800
800
#4437AB
oklch(42.7% 0.177 280.9)
-
Step 900
900
#383287
oklch(37.7% 0.137 280.7)
-
Step 950
950 (this color)
#181444
oklch(23.1% 0.087 280.9)
#181444 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #001D46 | 0.036 |
| Deuteranopia (no green cones) | #001943 | 0.034 |
| Tritanopia (no blue cones) | #022029 | 0.075 |
| Achromatopsia (no color) | #1B1B1B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #181444
#181444
oklch(23.1% 0.087 280.9)
- #221D00
#221D00
oklch(22.9% 0.048 100.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #181444, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.037
- Navy Blue #001146 ΔE 0.039
- Night Blue #040348 ΔE 0.057
- Midnight Purple #280137 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.060
- Oxford Blue #1B263B ΔE 0.062
- Very Dark Purple #2A0134 ΔE 0.065
- Dark #1B2431 ΔE 0.068
Use #181444 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.